I'm serializing my JTree expansion state in xml. When my app starts up
and rebuilds the tree, I want to expand any nodes that were visible when
the app last closed. Here is a snippet of code that is supposed to do this:

         DefaultMutableTreeNode childTreeNode = new
DefaultMutableTreeNode();
         int index = treeNode.getChildCount();
         ( ( DefaultTreeModel ) getNavigationTree().getModel()
).insertNodeInto( childTreeNode, treeNode, index );
.........
         Attr visibilityAttribute = nodeElement.getAttributeNode(
"visible" );
         if ( visibilityAttribute != null )
         {
           if ( visibilityAttribute.getValue().equals( "true" ) )
           {
             DefaultTreeModel model = ( DefaultTreeModel )
getNavigationTree().getModel();
             final TreePath path = new TreePath( model.getPathToRoot(
childTreeNode ) );
             Runnable makeVisibleRunnable = new Runnable() { public
void run(){ getNavigationTree().makeVisible( path ); } };
             SwingUtilities.invokeLater( makeVisibleRunnable );
           }
         }

I use invokeLater because this code is being run outside of the event
dispatch thread.

The problem is that the code has no effect. The tree always comes up in
a collapsed state.

Any ideas?

Thanks,
Dave Neuendorf